How to clip polygons in a shapefile by using the color values of a georeferenced tiff file?

[EvanHirsh]

So if you have a red part of the image, like a rectangle, in the tiff file, you would clip the shp polygons to the extent of the red part.

[Robert_LeClair]

Hmmmm...I'm thinking the following steps "may" work.

1. Run the Extract by Attributes GP tool if you know the cell value for the red cells - assuming an integer raster dataset here.
2. Then run the Raster to Polygon GP tool to convert the "selected" cells to a polygon feature class.
3. Finally, run the Clip GP tool to clip the shapefile via the feature class created in Step 2.

Good luck!

[EvanHirsh]

I'm not sure if the raster is in integer form, it only says Red: Band_1, Green: Band_2, Blue: Band_3. When I open the Extract by Attributes to under values there is nothing to select. Is there a way to convert to an integer dataset?

[Robert_LeClair]

There's an Int GP tool that would convert a floating point raster to an integer raster - could be worth experimenting with it to see if it accomplishes what you need.